1981 CJ7 Won't Start..Any Ideas?
I recently purchased a 1981 CJ7 with inline 258 6 cylinder that was in great original condition, but didn't run. So, I've installed a new battery and the engine cranks over fine, but I cannot get it to start. Here is what I've done so far:
Ignition - checked for spark from coil and its fine, checked for spark at each plug and they seem fine, checked timing and its set at 8 deg BTDC, checked to make sure rotor is firing to #1 cylinder when it is at TDC in compression cycle. As far as I can tell, ignition seems to be OK.
Fuel: hooked the fuel pump to a 5 gallon can with new gas, rebuilt carb, have verified that I'm getting fuel to the carb, can see fuel spraying in carb throat when pumping the accelerator. Not sure what else could be wrong here.
As I crank the engine, occasionally I'll get a little backfire through the carb, but then nothing again for the next 5 minutes of cranking. So I'm stumped. Could the coil just not be providing enough charge to ignite the fuel? Could compression be a concern (haven't checked that yet)?
I'm hoping someone out there has some wisdom to share!